Table 4.

Subjective Global Rating of Improvement (N= 82)

Responses after RCT with Unmatched	Responses after Change to
Treatment (Week 2)*	Matched Treatment (Week 4)**
My back pain is resolved	n/a
n=0
My back pain has improved	Resolved
n=15 (18%)	n=11/15 (73.3%)
	Improved
	n=3/15 (20.0%)
	Not changed
	n=1/15 (6.7%)
	Worse
	n=0/15 (0.0%)
My back pain has not changed much	Resolved
n=49 (60%)	n=23/49 (46.9%)
	Improved
	n=20/49 (40.8%)
	Not changed
	n=5/49 (10.2%)
	Worse
	n=1/49 (2.0%)
My back pain is worse	Resolved
n=18 (22%)	n=5/18 (27.8%)
	Improved
	n=10/18 (55.6%)
	Not changed
	n=3/18 (16.7%)
	Worse
	n=0/18 (0.0%)
Total improved or resolved	Total improved or resolved
n=15 (18%)	n=69 (84%)

*Difference from baseline to 2 weeks (end of original RCT,¹¹ Unmatched care)

**Difference from 2 to 4 weeks (Matched care)